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[DPRG] Measuring Speed of sound in a liquid

Subject: [DPRG] Measuring Speed of sound in a liquid
From: Rick J. Bickle rbickle at swbell.net
Date: Sat Sep 4 12:15:21 CDT 2004


Just out of curiosity...

Why is it necessary to have an A/D converter to read the received
signal. Is there liquid density information in something other than the
time of transmission? Perhaps the phase difference from transmit to

If the timing of the pulse is the only consideration, I would think that
sampling the received signal would be unnecessary. A variable gain
amplifier should suffice.


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